
\begingroup
\centering
\begin{tabular}{m{6cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm}}
   \toprule
                                         & (1)            & (2)            & (3)          & (4)            & (5)            & (6)\\  
   $\textbf{Panel A: ammonia}$\\
                                         &                &                &              &                &                &  \\  
   IHS restored wetland (acres)          & -0.010$^{***}$ & -0.015$^{***}$ & -0.004$^{*}$ & -0.009$^{***}$ & -0.014$^{***}$ & -0.004$^{**}$\\   
                                         & (0.002)        & (0.003)        & (0.002)      & (0.002)        & (0.003)        & (0.002)\\   
   IHS upstream restored wetland (acres) &                &                &              & -0.011$^{***}$ & -0.007$^{***}$ & -0.006$^{**}$\\   
                                         &                &                &              & (0.003)        & (0.002)        & (0.003)\\   
    \\
   \# HUC12                              & 302            & 302            & 302          & 255            & 255            & 255\\  
   Dependent variable mean               & 0.13346        & 0.13346        & 0.13346      & 0.13320        & 0.13320        & 0.13320\\  
   Observations                          & 14,257         & 14,257         & 14,257       & 12,466         & 12,466         & 12,466\\  
   Adjusted R$^2$                        & 0.25191        & 0.41669        & 0.40463      & 0.27828        & 0.43757        & 0.43156\\  
                                         &                &                &              &                &                &  \\  
\end{tabular}
\par\endgroup


